The only way to find out which one is to try another CPU on this mobo and/or this CPU on another mobo.
But if the pins are slightly bent, there's a chance that inserting this defective CPU into another motherbreak breaks that also. So I would start with trying another CPU in this motherboard.
Im hoping someone smart can help me.. So my problem is that my pc will turn on but the fans spin slow and I get no display and after running some test I have came to a conclusion that my mobo or cpu is broken.. I'm not sure which.. A few pins on my cpu are slightly bent maybe this is the problem.. I don't know help plzzz